SHAY DIAMOND CUT STUDS Trillion-cut natural diamonds — approximately 2.5 carats — three-prong set in 18k rose gold. Geometric, flat to the lobe, no setting visible from the front. The stud that isn't round. Details: 18-karat gold Diamond: approx 2.5 cts Natural stones only Product Number: SE294 Looking for something bespoke? Contact us . Slight variations in color, shape, and size are part of their beauty.